**Moisture Mapping Overview**
Moisture mapping involves measuring moisture content in buildings and structures to identify areas of excessive moisture that may lead to structural damage or health hazards. Acceptable moisture levels vary depending on the building materials, location, and climate. Deviations from these levels warrant further investigation and remedial action.
## Acceptable Moisture Levels
* **Wood:** 6-12% moisture content (MC)
* **Concrete:** Less than 4% MC
* **Gypsum (Drywall):** Less than 1% MC
* **Interior Wall Surfaces:** Less than 15% MC
**What is a Bad Moisture Reading?**
* **Wood above 12% MC:** Increased risk of rot, mold, and structural weakness
* **Concrete above 4% MC:** Potential for efflorescence, cracking, and corrosion of reinforcement
* **Gypsum above 1% MC:** Reduced structural integrity, decreased fire resistance, and potential for mold growth
* **Interior Wall Surfaces above 15% MC:** Increased likelihood of surface damage, mold, and condensation
**Importance of Monitoring Moisture Levels**
Monitoring moisture levels is crucial for:
* Preventing structural damage
* Maintaining indoor air quality
* Reducing health risks associated with mold growth
* Extending the lifespan of buildings